एक प्रकाश वर्ष में कितने किलोमीटर होते हैं?
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Answer:
9.46×10¹² किलोमीटर
Explanation:
=दुरी= बेग /समय
=1 प्रकाशवर्ष =3×10⁸×365×24×60×60
=9.46×10¹⁵ मीटर
=9.46×10¹²×10³मीटर
=9.46×10¹² किलोमीटर
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